`vsync = 0` option causes XWayland games to not launch on NVidia drivers 550

[fxzzi]

Describe the bug A clear and concise description of what the bug is.

List relevant hardware/software information

• Arch Linux
• MangoHud version 0.7.1
• NVidia RTX 3070

To Reproduce Steps to reproduce the behavior:

1. Update to NVidia drivers 550
2. Set vsync=0 in mangohud config
3. Launch a game with XWayland (Elden Ring and Doom Eternal both display these issues for me)
4. Observe that the game doesn't lanuch and stays on a White / Black screen (MangoHud also does not display)
5. Set vsync=1 (off) instead and lanuch, observe that the games launch completely fine with no issues.

Expected behavior The game should launch correctly with the correct FIFO Relaxed Vsync option enabled

Additional context Does not occur on NVidia Driver version 535.

[flightlessmango]

This seems like an issue on nvidia's end

[Revival8697]

On GTX 1660 Ti Mobile, driver version 550.67, games launch but result in black screen.

[flightlessmango]

This is not likely to be a mangohud issue as we just set the user specified present mode. This should be reported to nvidia

[fxzzi]

Understood, thanks. I had posted on the Nvidia forum as well as here. Please like the post or say you're experiencing the issue yourself, Nvidia hasn't made a single reply on it.

https://forums.developer.nvidia.com/t/blank-screens-on-games-with-adaptive-vsync-fifo-relaxed-khr-enabled-driver-550-regression-works-on-535/284442?u=faaris.ansari